if u have a car which has no powerlocks, no power windows using keys, very manual, id like to modify it a litttle bit with power locks (is it pre requisite in putting a car alarm which i am also thinking of putting), what will i put or choose to put, and re keyless entry (what do u think of this, is it ok or is it better if i just put car alarm instead because it also includes keyless remote entry) and what will i put.

* i have a 3 door hatchback, cvic

usually how, and how much will it cost.. where to buy and have it installed, and how long..

either
a. powerlocks and keyless remote entry combo
b. powerlocks and car alarm combo